FreeCalypso > hg > gsm-codec-lib

annotate libtwamr/d_gain_p.h @ 527:f3246d109e2d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
libgsmfr2: add gsmfr_fulldec_bfi_bits()
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 19 Sep 2024 07:03:12 +0000
parents e18452a4fbac
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
340
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 ********************************************************************************
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 *
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 * R99 Version 3.3.0
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 * REL-4 Version 4.1.0
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 *
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 ********************************************************************************
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 *
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 * File : d_gain_p.h
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 * Purpose : Decodes the pitch gain using the received index.
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 *
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 ********************************************************************************
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 */
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 #ifndef d_gain_p_h
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 #define d_gain_p_h "$Id $"
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 /*
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 ********************************************************************************
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 * INCLUDE FILES
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 ********************************************************************************
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 */
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 #include "tw_amr.h"
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 #include "typedef.h"
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 /*
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 **************************************************************************
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 *
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 * Function : d_gain_pitch
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 * Purpose : Decodes the pitch gain using the received index.
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 * Description : In case of no frame erasure, the gain is obtained
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 * from the quantization table at the given index;
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 * otherwise, a downscaled past gain is used.
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 * Returns : Quantized pitch gain
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 *
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 **************************************************************************
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 */
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 Word16 d_gain_pitch ( /* return value: gain (Q14) */
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 enum Mode mode, /* i : AMR mode */
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 Word16 index /* i : index of quantization */
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 );
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42
e18452a4fbac libtwamr: integrate d_gain_p.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 #endif